The Container Exchange Route (CER) project comprises three sub-programmes: civil engineering; earthworks, road construction and hydraulic engineering and technical systems. The civil engineering team will be constructing three overpasses where the new track crosses existing roads. The second sub-programme involves constructing the CER track, while the third technical sub-programme relates to road lighting and traffic control systems. These three disciplines each call for specialists with solid expertise in their respective fields.
In April 2019, Combinatie CER initiated the execution stage of the CER project. The results of our work so far can already be seen at viaduct West, the CER overpass near the RWG terminal. We have already installed the pre-loads for the southern overpass (viaduct Zuid) near APMT-MV2, while simultaneously realising the CER track sections between the various overpasses.
It has been over three months since we made a start on viaduct West. This will be the largest overpass of the entire Container Exchange Route. The most recent period was spent installing the foundation and the substructure for the overpass. We have realised sheet piling (soil retaining walls) at a large number of sites. These sheet pile walls play a key role in the project, since they prevent our construction activities from negatively affecting the nearby railway line and roads. In a follow-up to this project, we used a drilling rig to install a total of 368 foundation piles. The rig bores hollow steel tubes into the soil, which are subsequently poured full of concrete. After finishing at the viaduct West site, the rig will be doing similar work at viaduct Noord and then viaduct Zuid.
After rounding off the foundations, we made a start on the substructure. This is made up of various bearings that are attached to the aforementioned pile foundations. The bearings comprise multiple reinforced concrete elements. This means we need to first apply steel rebars, after which we construct a formwork, which is then poured full of concrete. This subproject is already well underway.
The realisation of the CER track calls for an integrated approach. That is why during the design phase, we already gave thought to the optimal deployment of various specialised teams during construction. We start off by installing jacket pipes, which will be used as a conduit for cables and pipelines. The sewer installation crew will start be laying the jacket pipes along each of the CER sections, which also includes installing pipelines and wells. After finishing a given section, the crew moves on to the next one. The same applies to the other teams – they will basically be moving from one section to the next in a kind of ‘project train’. After installing the sewer, we will start excavating a road section, allowing the next team to pour the lean concrete produced in our own concrete mixing plant at Rozenburg. This lean concrete needs to cure for a number of days before we can move on to the next stage: asphalting. This asphalt will be reinforced in preparation for the final stage: the pouring of a layer of concrete that will form the surface of the Continuous Reinforced Concrete structure.
View the total planning here.